Equipment system for agricultural ground soil preparation

ABSTRACT

The equipment system consists essentially of the undercarriage 101 having supporting wheels, the rotary device with dovetailing prongs 102, the sowing machine 103 and the land roller or clod breaker apparatus 104. The system components may be used in various combinations or individually.

The invention relates to an equipment system for agricultural groundsoil preparation having a frame unit which, by means of a lifting rodassembly or three-point rod assembly, can be vertically adjustablycoupled to a traction vehicle, such as a tractor, and is used for groundsoil preparation equipment which can be combined in different ways, suchas a power take-off shaft driven rotary device with dovetailing prongsor similar devices which produce a similar stream of soil which, behindthe rotary device with dovetailing prongs, is guided to the ground bymeans of devices arranged there, and a sowing machine which hasvertically adjustable seed delivery pipes which can be mounted behindthe rotary device with dovetailing prongs or the like and project intothe stream of soil thrown up by the rotary device with dovetailingprongs or the like, and a land roller or clod breaker apparatus and plowaccessories or the like, which vertically adjustably can be mounted atthe frame of the rotary device with dovetailing prongs in front of therotor. At the frame of the rotary device with dovetailing prongs or thelike, a trestle-type frame part is fixedly arranged which can be coupledto the lifting rod assembly three-point rod assembly. The land roller orclod breaker apparatus has a separate frame which, in the manner of arocker device, pivotably adjustably around a transverse axis, can beconnected to separate connecting points of the frame of the rotarydevice with dovetailing prongs or the like.

In principle, combination machines are known for agricultural groundsoil preparation which, during a single passage over the ground to beworked or tilled, carry out several operations simultaneously.

EP-A 02 01 785, for example, describes an agricultural combinationmachine of the initially mentioned type.

The sowing machine of this known machine may selectively be equippedwith sowing plows which operate behind the clod breaker apparatus, orwith seed delivery pipes which operate within the stream of soil thrownup by the rotary device with dovetailing prongs in front of the clodbreaker roller. In order to prevent in this case that the spaces betweenthe seed delivery pipes are clogged by adhering soil or plant residues,the seed delivery pipes are arranged directly in front of the clodbreaker roller, specifically in such a manner that rows of teetharranged on the clod breaker roller project into the spaces between theseed delivery pipes. In this manner, the spaces are kept free ofcloggings by means of the teeth of the clod breaker roller which movewhile the machine is driving. However, for this purpose, clod breakerrollers are required which have correspondingly long teeth; i.e., anyarbitrary type of clod breaker rollers cannot be used.

In EP-A 02 01 785, the sowing plows are arranged in two rows behind oneanother, in which case, sowing plows which follow one another intransverse direction of the machine are alternately assigned to one orthe other row. Such an arrangement is necessary in order to be able toachieve a relatively narrow line distance in transverse direction of themachine by means of sowing plows.

Since the sowing plows cut into the soil, they basically have thedisadvantage that plant residues remaining in the soil may adhere to thesowing plows. Therefore, sowing plows are disadvantageous in cases wherefairly large quantities of plant residues remain on or in the ground.

In the case of the combination machine shown in EP-A 02 01 785, the clodbreaker roller also has the task of guiding to the ground the stream ofsoil thrown backward by the rotary device with dovetailing prongs.

Another combination machine is shown in EP-A 02 11 967.

In this case, a premounted apparatus, which carries plow accessories andis supported on the ground to be worked by means of its own wheels, canbe coupled to a traction vehicle by means of a three-point rod assembly.

A second apparatus, which is constructed as a circular spike harrow canvertically movably be connected to the premounted apparatus by means ofa three-point rod assembly. During the operation, the second apparatus,by means of a follower roller, is supported on the ground.

By means of another three-point rod assembly, a cart rolling on separatewheels can be connected behind the second apparatus. A followerapparatus, such as a sowing machine, which moves on its own wheels, maythen vertically adjustably be connected behind this cart again by meansof a three-point rod assembly.

The cart is mainly used for supporting the apparatus during thetransport in the lifted position. For this purpose, the front end of thewhole machine combination is lifted from the direction of the tractionvehicle by means of the three-point rod assembly on the traction vehicleside. In addition, the three-point rod assemblies are hydraulicallyadjusted in front of and behind the cart in such a manner that thesecond apparatus as well as the follower apparatus are lifted.

It is now the object of the invention to provide an equipment systemwhich can be manufactured comparatively cost-effectively and the, ifnecessary, also separately usable system components of which can becombined with one another with a particularly minimal amount of labor.

In the case of an equipment system of the initially mentioned type, thisobject is achieved according to the invention

in that a trestle-type frame part, which can be coupled to the liftingrod assembly or three-point rod assembly, is fixedly arranged also atthe frame of a separate undercarriage with supporting wheels,

in that, on the rear side of the trestle-type frame parts of the rotarydevice with dovetailing prongs or the like and the undercarriage whichfaces away from the lifting rod assembly or three-point rod assembly, asupporting frame is arranged--as part of the trestle-type frame part orfixedly connected with it--which can be coupled with matching receivingparts of a bearing frame of the sowing machine by inserting thesupporting frame from below into the receiving parts or lowering thebearing frame of the sowing machine from above on the supporting frameand locking it by means of a locking without play in all directionsrelative to the supporting frame,

in that separate connecting points, which are identical to those on theframe of the rotary device with dovetailing prongs or the like, arearranged at the bearing frame of the sowing machine for the separateframe of the land roller or clod breaker apparatus,

in that the seed delivery pipes can be mounted behind one another in atleast two rows, seed delivery pipes following one another in transversedirection being assigned alternately to one or the other row,

in that behind the seed delivery pipes--in front of the possiblyconnected land roller or clod breaker apparatus, a mat-type curtain canbe transversely mounted which guides the stream of soil to the ground,and

the plow accessories or the like may also be mounted at theundercarriage frame.

By means of the equipment system according to the invention, differentequipment combinations may be established in a very simple manner. Thepossibility exists, for example, of putting together a simple sowingapparatus by arranging the sowing machine with its bearing frame on theundercarriage frame. If necessary, plow-type accessories may be arrangedat the undercarriage frame for breaking open or loosening the groundsurface and thus preparing it better for receiving the seed.

If necessary, this sowing apparatus may be combined with a land rolleror clod breaker apparatus, because corresponding connecting points forthe frame of the roller are provided at the bearing frame of the sowingmachine.

At any time, the rotary device with dovetailing prongs may be used aloneor in combination with plow accessories arranged at its frame whichoperate in front of the rotary device with dovetailing prongs.

As a result of the above-indicated special arrangement of the seeddelivery pipes, large distances remain between them, through which evenlong-strand plant residues or the like can pass. A clogging of thespaces between the seed delivery pipes therefore does not have to befeared when the sowing machine is used without the rotary device withdovetailing prongs or when the sowing machine is used in combinationwith the rotary device with dovetailing prongs.

The mat-type curtain, which can be mounted behind the seed deliverypipes, particularly when the sowing machine is combined with the rotarydevice with dovetailing prongs, promotes the covering of the seed byguiding to the soil surface the stream of soil which is thrown backwardthrough the spaces between the seed delivery pipes by the rotary devicewith dovetailing prongs.

This, at the same time, protects the land roller or clod breaker whichmay operate behind the seed delivery pipes; i.e., even when the worktakes place in moist soil, comparatively, the roller does not becomevery dirty. As a result of the flexibility of the curtain, moist orclayey sticky soil will adhere to the curtain only for a short time.Because of the continuously changing movements of the curtain, theadhering soil will be detached in a very short time and guided to thesoil surface; i.e., the curtain cleans itself.

In addition, reference is made to the subclaims and the followingdescription of preferred embodiments by means of the drawing concerningadvantageous and preferred characteristics of the invention.

FIG. 1 is a lateral view of the undercarriage with the supportingwheels;

FIG. 2 is a lateral view of the rotary device with dovetailing prongs;

FIG. 3 is a lateral view of the sowing machine;

FIG. 4 is a lateral view of the land roller or clod breaker;

FIG. 5 is a view of the supporting frame arranged at the undercarriageor at the frame of the rotary device with dovetailing prongscorresponding to the arrows Z in FIGS. 1 and 2;

FIG. 6 is a lateral view of an equipment combination having, among otherthings, a rotary device with dovetailing prongs, a sowing machine, aland roller and clod breaker as well as plow accessories arranged infront of the rotary device with dovetailing prongs;

FIG. 7 is a partial lateral view of the machine shown in FIG. 6, inwhich the land roller or clod breaker is once shown in the operatingposition (FIG. 7A) and a second time in a folded-up transport position(FIG. 7B);

FIG. 8 is a lateral view of a holding device for the stems of the plowaccessories operating in front of the rotary device with dovetailingprongs, which can be mounted at the frame of the rotary device withdovetailing prongs;

FIG. 9 is a frontal view of this holding device corresponding to arrowIX in FIG. 8;

FIG. 10 is a lateral of the plow accessory arranged in front of therotary device with dovetailing prongs used for loosening the soil;

FIG. 11 is a sectional view of this accessory corresponding to theintersecting line XI--XI in FIG. 10;

FIG. 12 is a view of a rotor prong in axial direction of the rotarydevice with dovetailing prongs;

FIG. 13 is a view of the rotary device with dovetailing prongscorresponding to arrow XIII in FIG. 12;

FIG. 14 is a lateral view of a prong end piece of the rotary device withdovetailing prongs used as a mulching prong viewed in axial direction ofthe rotary device with dovetailing prongs;

FIG. 15 is a sectional view of the mulching prong corresponding to theintersecting line XV--XV in FIG. 14;

FIG. 16 is an axial view of an intermediate bearing of the rotary devicewith dovetailing prongs;

FIG. 17 is a view of the intermediate bearing corresponding to arrowXVII in FIG. 16;

FIG. 18 is an axial sectional view of the intermediate bearing;

FIG. 19 is a rear view of the sowing machine;

FIG. 20 is a lateral view of the seed delivery pipes as well as thepertaining holding and adjusting arrangement;

FIG. 21 is a lateral view of a seed delivery pipe which is in front indriving direction and is, pivotably against a spring force, held at atransverse bar;

FIG. 22 is a representation corresponding to FIG. 21 of a seed deliverypipe which is in the rear in driving direction;

FIG. 23 is a lateral view of the undercarriage having supporting wheelsand with a sowing machine mounted on the undercarriage frame; and

FIG. 24 is a lateral view corresponding to FIG. 23 of a sowing machinemounted on the undercarriage frame, in which case, however, instead ofthe supporting wheels, a land roller is arranged at the undercarriageframe.

A particularly preferred embodiment of the equipment system according tothe invention shown in FIGS. 1 to 5 comprises the undercarriage 101shown in FIG. 1, the rotary device with dovetailing prongs 102 shown inFIG. 2, the sowing machine shown in FIG. 3 as well as the land roller orclod breaker apparatus 104 shown in FIG. 4.

In a manner shown further below, the sowing machine 103 can be mountedon the undercarriage 101 as well as on the rotary device withdovetailing prongs 102 without much labor, so that the sowing machine103 can be carried by the undercarriage 101 or by the rotary device withdovetailing prongs 102. In this case, the sowing machine 103 is heldwithout play on the supporting frame 105 (compare also FIG. 5) of theundercarriage 101 or the rotary device with dovetailing prongs 102

The land roller or clod breaker apparatus 104 may be mounted selectivelydirectly at the rotary device with dovetailing prongs 102 or at theframe of the sowing machine 103. The arrangement at the sowing machine103 is possible whether the sowing machine 103 is mounted on theundercarriage 101 or on the rotary device with dovetailing prongs 102.

If necessary, the land roller or clod breaker apparatus 104 may also bearranged at the frame of the undercarriage 101, if its wheels or theaxle arrangement bearing the wheels are dismounted.

The land roller or clod breaker apparatus 104 is, in each case, coupledin the manner of a rocker device, in that shacke-toggle joint type clips106 arranged at the frame of the land roller or clod breaker apparatus104, in the manner of hinges by means of bolts, are fastened toconnecting parts 107 at the frame of the sowing machine 103 or of therotary device with dovetailing prongs 102. The adjustment of the heightof the land roller or clod breaker apparatus 104 relative to theapparatus arranged in front of it takes place by means of a supportingaggregate 108 which, on one side, is coupled to an upwardly-directed armof the frame of the land roller or clod breaker apparatus 104 and, onthe other side, can be pivotally fastened to connecting points 109 atthe frame of the sowing machine 103 or of the rotary device withdovetailing prongs 102.

The undercarriage 101 as well as the rotary device with dovetailingprongs 102 have a trestle-type frame part 110 which, in the case of therotary device with the dovetailing prongs 102, has a particularly stableconstruction in view of the high weight of the device and itsconsiderable stressing during ground soil preparation. At thetrestle-type frame part 110, lower connecting Points are provided ineach case for two lower links and upper connecting points for one upperlink of a three-point rod assembly 111 arranged at a traction vehicle ortractor, in order to be able to hold the undercarriage 101 or the rotarydevice with dovetailing prongs 102 directly at the traction vehicle ortractor. By means of the three-point rod assembly 111, the coupleddevice can be held vertically adjustably relative to the tractionvehicle or tractor, which, as a rule, is necessary, for soil preparationwork. In addition, the three-point rod assembly 111 offers thepossibility of lifting the coupled device or hold it at a given heightrelative to the traction vehicle or tractor.

The possibility of lifting the coupled device, i.e., moving itvertically relative to the traction vehicle or tractor, is utilized whenthe sowing machine 103 is mounted on the undercarriage 101 or the rotarydevice with dovetailing prongs 102. When the sowing machine 103 is notused, it may be parked by means of supports 33 which can be mounted at atransverse bar of the sowing machine frame and, together with the frame,form a gantry; compare also FIG. 19. Now, the undercarriage 101 or therotary device with dovetailing prongs 102, after the coupling with thethree-point rod assembly 111, is moved into a position in which thesupporting frame 105 is in a position in which the slanted members 112of the supporting frame 105 take up a position below correspondinglyslantedly arranged receiving parts 113 at the sowing machine frame. Thereceiving parts 113 may, for example, be constructed as U-profiles intowhich the slanted members 112 of the supporting frame 105 can be pushedby means of the lifting of the undercarriage 101 or of the rotary device102 with dovetailing prongs 102 by means of the three-point rod assembly111. This pushing-in movement may be facilitated by the fact that thesupports 33, as shown in FIG. 3, can be adjusted in their slope. Inaddition, an upwardly directed guide rod 114 may be arranged at thesupporting frame 105, the free upper end of which, in the lateral viewshown in FIGS. 1 and 2, is constructed in the manner of a roof andinteracts with guide plates arranged between the receiving parts 113 ofthe sowing machine frame in order to simplify the pushing-in of thesupporting frame 105 into the receiving parts. As soon as the receivingparts 113 lie firmly on the slanted members 112 of the supporting frame105, the position of the sowing machine on the supporting frame 105 issecured so that it is immovable. For this purpose, a threaded part 115is used, for example, which according to FIG. 2, is pivotably fastenedto the supporting frame 105 and which, when the sowing machine framesits on the supporting frame 105, can be folded into a U-shaped recess,which is open toward the front, at an extension 116 of the sowingmachine frame. Then, a nut 117, which can be screwably adjusted on thethreaded part 115, is braced against the top side of the mentionedextension 116, in order to clamp the sowing machine frame or itsreceiving parts 113 without play onto the slanted members 112 of thesupporting frame 105.

The coupling of the land roller or clod breaker apparatus 104 to therotary device with dovetailing prongs 102 or the sowing machine 103 isalso considerably facilitated by the lifting adjustability of thethree-point rod assembly 111. By means of a corresponding moving of thetraction vehicle or tractor as well as by means of the liftingadjustment of the coupled apparatus, the connecting parts 107 may bebrought into a position in which they can be connected without anydifficulty with the brackets 106 of the frame of the land roller or clodbreaker apparatus 104.

The undercarriage 101 shown in FIG. 1 has a special characteristic inthat a pulley 118 or the like is rotatably disposed on the undercarriageframe and can be driven by the traction vehicle or the tractor by meansof a power take-off shaft 119 which, in turn, may be coupled with atoothed end 120 of the pulley shaft. This provides a simple possibilityof driving, if required, a sowing machine mounted on the undercarriage101 by means of the power take-off shaft 119. This is particularlyimportant if so-called pneumatic sowing machines are to be used, inwhich the seed must be conveyed into the seed delivery pipes or the likeof the sowing machine by means of a blower to be driven by the powertake-off shaft 119.

In addition, plow-accessory type spring prongs 121 may be arranged atthe undercarriage 101 which prepare the soil for the sowing of the seedby means of the sowing machine 103 which can be mounted on theundercarriage 101.

However, in principle, the spring prongs 121 may also be arranged at theframe of the sowing machine 103.

According to FIGS. 23 and 24, transverse bars 204 and 205 of theundercarriage 101 may be arranged at a particularly large distance fromthe ground. In this case, the front transverse bar 104 forms a gantry infrontal view of the machine, in that downwardly directed end pieces 204'are arranged at the lateral ends of the transverse bar 204. An axle unitfor the wheels 214 may be held between the end pieces 204'.

The axle unit consists essentially of an axle 241 which, for example, isformed by a sturdy tube, and carries the wheels 214 and, by means oflongitudinal control arms 242 which are rigidly arranged at it, iscoupled to the end pieces 204' of the front transverse bar 204 whilebeing able to be swivelled around a transverse axis. For the hingedconnection between the end pieces 204' and the longitudinal control arms242, pins 245 are used, for example, which penetrate aligned bores atthe end pieces 204' as well as the longitudinal control arms 242. Inaddition, an arm 243, which is directed slantedly upward and toward therear, is fixedly arranged at the axle 241, approximately in its centralarea, this arm 243 being hinged to one end of a spindle 244, the otherend of which is hinged to a part of the undercarriage frame, forexample, to the rear transverse bar 205. By a changing of the length ofthe spindle 244, the position of the axle 241 may be changed in verticaldirection.

According to FIG. 24, the land roller or clod breaker apparatus 104, inprinciple, may be connected with the frame of the undercarriage 101 inthe same manner as the axle unit.

For the coupling to an apparatus moving in front of it, the frame of theland roller or clod breaker apparatus 104 has brackets or longitudinalcontrol arms 106 which, in the same manner as the longitudinal controlarms 242 of the axle unit (compare FIG. 23), can be hinged to the endpieces 204' of the front transverse bar 204, so that the frame of theland roller or clod breaker apparatus 104 can swivel relative to theframe of the undercarriage 101 around a transverse axis formed by thepins 245. Between an arm 248 arranged at the frame of the land roller orclod breaker apparatus and a part of the frame of the undercarriage 101,for example, the trestle-type frame part 110, a spindle 244 is arranged,in turn, the dimension of the length of which determines the position ofthe roller relative to the undercarriage frame in vertical direction.

In the case of the rotary device with dovetailing prongs 102, thetrestle-type frame part 10, as in the case of the rotary device withdovetailing prongs 110 shown in FIG. 6, is arranged as part of a bearingframe which carries the rotary device with dovetailing prongs 14 and, atthe front side of the device, has a sturdy transverse bar 3 as well asshort longitudinal bars 4. In this case, the lateral parts of the rotorhousing which carry the ends of the rotor shaft are supported at thetransverse bar 3 as well as at a tube arranged in transverse directionof the device, this tube being connected with the longitudinal bars 4and being arranged as a jointly carrying part, on both sides of ahousing 5 for a transmission of the rotary device with dovetailingprongs 14 which is located in the space between the longitudinal bars 4and the trestle-type frame part 110. For the drive of the rotary devicewith dovetailing prongs 14, a take-off shaft 119 is used which can beconnected with a transmission connection of the traction vehicle ortractor and drives the transmission housed in the housing 5. Thistransmission, in turn, by means of a shaft housed in the above-mentionedtube, is in driving connection with transmission elements in one sidepart of the rotary device with dovetailing prongs 102 and thus with therotor shaft.

In addition, the transmission housed in the housing 5 has anothertransmission output for driving of a pulley 118 or the like arrangedthere, which makes it possible, for example, to drive a pneumatic sowingmachine or the like mounted on the rotary device with dovetailing prongs102, as described above in connection with the undercarriage 101.

According to FIG. 2, runners 122 may be arranged at the lateral parts ofthe rotor housing in which the ends of the rotor shaft are disposed,these runners 122 preventing a direct ground contact of the lateralparts. In order to avoid an adhering of long-strand plant residues orthe like to the runners 122, feeding disks 123 are rotatably arranged infront of the runners 122 which, in top view of the device 102, form afunnel which is open in driving direction and correspondingly duringsoil work, push soil and plant residues located on the ground surfaceout of the area in front of the runners 122 into the operating range ofthe rotor 14. The stems 124 holding the feeding disks 123 are verticallyadjustably arranged at the transverse bar 3. In order to make possiblethat the feeding disks 123 operate directly in front of the runners 122,and thus particularly effectively keep the runners free of plant strandsand the like, the stems 124 are arranged slantedly in the manner shownin FIG. 2.

The rotary device with dovetailing prongs 14 is driven in acircumferential direction which supports the driving direction of thedevice; i.e., in FIGS. 2 and 6 in a counterclockwise rotating direction.

On its top side, the rotary device with dovetailing prongs 14 is coveredin the manner of a housing, in which case the covering continues towardthe rear as a flap 15 which can be swivelled around a transverse axis(compare FIG. 6), the position of which can be adjusted by means ofcranks 40 or the like. As a result, the stream of soil which isgenerated and thrown in backward direction by the rotary device withdovetailing prongs 14 can be limited in upward direction.

In order to, in addition, reduce the scattering of the stream of soil inupward direction, a flexible mat 80 may be arranged at the free edge ofthe flap 15, the dimensions of which, with respect to the size,correspond to the dimensions of the flap 15. In this case, the stiffnessof the mat 80 is approximately such that the mat 80 is brought into anapproximately horizontal position by the stream of soil which is throwntoward the rear by the rotary device with dovetailing prongs 14. As theresult of the arrangement of the mat 80, a stream of soil is generatedwhich in upward direction is limited by a boundary layer with a smallcross-section. As a result of the flexibility of the mat, this matcontinuously carries out more or less pronounced fluttering and flexingmovements which prevent soil from adhering to the mat 80. As a result ofthe arrangement of the mat 80, the stream of soil generated by therotary device with dovetailing prongs 14 covers the seed particularlyevenly which, by means of seed delivery pipes 10 of the sowing machine103 arranged behind the rotary device with dovetailing prongs 14, can beplaced in or under the the stream of soil generated by the rotary devicewith dovetailing prongs 14.

As a deviation from the apparatuses shown in FIGS. 2 to 4, in which theland roller or clod breaker apparatus 104, in the case of a combinationof the rotary device with dovetailing prongs 102 with the sowing machine103, is arranged at the frame of the sowing machine 103, it is providedin the embodiments according to FIGS. 6 and 7 to connect the land rolleror clod breaker apparatus 104 with the frame of the rotary device withdovetailing prongs 102.

For this purpose, an intermediate frame 7 connects to the longitudinalbars 4 of the frame carrying the rotary device with dovetailing prongs14, this intermediate frame 7, in turn, being connected with the frameof the land roller or clod breaker apparatus 104.

The intermediate frame 7 may form or carry a platform made of gridironsor the like which is used as a standing base for the equipment user whenthe seed container 35 of the sowing machine 103 mounted on the rotarydevice with dovetailing prongs 102 is to be inspected or filled.

At the edge of the platform or of the intermediate frame 7 on the sideof the roller, a curtain 16 is arranged which prevents that the streamof soil thrown up by the rotary device with dovetailing prongs 14 canimpact directly on the roller 17. The rear side of the curtain 16 facingthe roller also has a glaring color, for example, in the form of ared-and-white striped pattern. In rear view of the apparatus, this rearside becomes completely visible when the land roller or clod breakerapparatus 104 is swivelled from the operative position shown in FIG. 6to a transport position above the intermediate frame 7 (compare FIG. 7).Thus, traffic which follows is caused to pay more attention during thetransport of the apparatus.

In the case of equipment with a very large operating width, it isnormally, for reasons of stability, not sufficient for the frame of theland roller or clod breaker apparatus 104 to be held only at anintermediate frame 7 extending the longitudinal bars 4. In this case, onthe top side of the rotor housing, additional longitudinal bars arearranged close to the exterior sides of the apparatus which are spacedaway from the longitudinal bars 4. Here, the front ends of theseadditional longitudinal bars may be connected with the transverse bar 3.In addition, the exterior sides of the rotor housing or the additionallongitudinal bars are also supported with respect to the upper area ofthe trestle-type frame part 110 by means of rods which are not shown.

For the holding arrangement, which can be swivelled upward, of the landroller or clod breaker apparatus 104, a transverse bar 91 is disposed,pivotably around a transverse axis of the apparatus, at the rear ends ofthe bars of the intermediate frame 7, which extend the longitudinal bars4 or at the rear ends of the additional longitudinal bars. For theswivelling of the transverse bar 91, essentially horizontally arrangedpiston-cylinder units 92 are used which are coupled above theintermediate frame 7 or the additional longitudinal bars, to holdingarms 90 fixed at the frame and, on the other side, are coupled to crankarms 93 which are non-rotatably connected with the transverse bar 91. Bymeans of the corresponding actuating of the piston-cylinder units 92,the transverse bar 91 may be swivelled between the end positions shownin FIG. 7.

The frame of the land roller or clod breaker apparatus 104 is, pivotablyaround an additional transverse shaft 8, arranged at the transverse bar91. For supporting the frame of the land roller or clod breakerapparatus 104 with respect to the transverse bar 91, a supportingarrangement 30 is used which is arranged between a holding arm 94arranged at the transverse bar 91 approximately in its center and acorresponding holding arm 95 arranged at the frame of the land roller orclod breaker apparatus 104. The supporting arrangement 30 is normallystressed by pressure because the roller 17 supports the apparatus whenthe soil is worked. However, the supporting arrangement 30 has a certainplay which makes it possible for the equipment parts in front of theroller to escape in upward direction when ground obstacles or the likeare encountered, without the requirement of having to also lift theroller 17 at the same time. In this case, the supporting arrangement 30may be extended by an extent indicated by the play.

The supporting arrangement 30 is constructed in the manner of atelescope, in which case the whole, preferably adjustable clearance ofmotion permits the parts which can be telescoped to perform relativemovements with respect to one another. Inside the supporting arrangement30, an additional piston-cylinder unit may be arranged which has thepurpose of shortening the supporting arrangement 30 as much as possiblewhen the transverse bar 91 is swivelled for the folding-up of the landroller or clod breaker apparatus 104. As a result, the elements of thesupporting arrangement 30 are held braced with respect to one anotherwithout play, and it is ensured at the same time that the roller 17, inthe swivelled-up position, is shifted toward the front as far aspossible. Correspondingly, the center of gravity of the whole apparatusalso shifts toward the front. This is important when the wholeapparatus, by means of the lifting rod assembly or three-point rodassembly 111, is coupled to a comparatively light traction vehicle andmust be lifted from the operating position, into a lifted-out position,particular for the transport. Since the center of gravity of the wholeapparatus, when the roller is folded-up, shifts toward the vehicle, thetotal weight of the apparatus, relative to the vehicle, has acomparatively short lever arm effect. As a result, the front axle of thetraction vehicle or tractor is less extensively relieved from load whenthe apparatus is lifted.

The prongs 60 of the rotor, corresponding to FIGS. 12 and 13, have aholding arm 62 welded to the rotor shaft 61, which, as a forged part,with respect to its functional design, is constructed such that thecentral rib 62' of the holding arm 62 has a soil-separating effect andcontinues the wedge edge 70 of a prong end piece 63 exchangeably held atthe holding arm 62 all the way to the rotor shaft 61. The prong endpiece 63 and the holding arm 62 form an obtuse angle, which is open inrotating direction, in such a manner that the longitudinal axis of theprong end Piece 63 extends at a radial distance from the axis of therotor shaft 61 and tangentially to it. For the holding of the prong endpiece 63 at the holding arm 62, a bore 64 is used which is arranged init and into which the prong end piece 62 can be inserted with ajournal-shaped insert part 65. The insert part 65 has an end sectionprovided with a thread onto which a nut 66 is screwed in order to holdthe insert part 65, in the manner shown in FIG. 12, in the bore 64 or atthe holding arm.

If necessary, the nut 66 may also form the head of a screw which can bescrewed into a threaded bore in the insert part 65.

By means of the corresponding tightening of the nut 66, the slantedsurfaces 67 and 68 are braced with respect to one another in the mannerof a wedge. The slanted surfaces 67, following the insert part 65, arearranged prismatically with respect to one another, at the prong endpiece 63, on its side pointing against the rotating direction. Thecorresponding slanted countersurfaces 68 are located on an enlargement69 which, for supporting the zink end piece 63, on its side which pointsagainst the rotating direction, is molded to the holding arm 62. Becauseof the mentioned slanted surfaces 67 and 68, it may be easily beachieved despite manufacturing tolerances, that the prong end pieces 63firmly rest against the enlargement and are therefore well supported.For this purpose, only the nut 66 must be tightened correspondingly. Inaddition, the prong end piece 63, because of the resistance generated bythe soil, during ground preparation work, also tries to push itself intothe receiving bore 64, in which case the slanted surfaces 67 and 68 arepressed on one another with a correspondingly increased force.

The area of the prong end piece 63 which engages in the ground has anessentially rhombically square cross-section, such that a striking orwedging edge 70 is formed which points in rotating direction. Thus, theprong 60 can throw gripped soil toward the rear and toward the sidewhile firm soil clods and plant residues and the like are destroyed andcrushed. In this case, the rotor operates at a relatively highrotational speed. As a result of the high rotational speed, theadvantage is also achieved that the rotor may be equipped withcomparatively few prongs. Specifically, it is sufficient for only oneprong 60 to be arranged for each stroke plane of the rotary device withdovetailing prongs. In addition to ensuring a good performance, thisresults in the advantage that the rotary device with dovetailing prongscannot become clogged.

According to FIGS. 14 and 15, plow-type blades 71 may be arranged at thefree ends of the prong end pieces, in order to further improve themulching effect of the prongs. In this case, each plow-type blade 71 isaligned in such a manner that, in axial view of the rotary device withdovetailing blades, together with a radial line leading from the axis ofthe rotor shaft 61 to the connecting area between the prong end piece 63and the plow-type blade 71, it forms an obtuse angle which is open inrotating direction. Correspondingly, the plow-type blade 71 seeks tolift up the gripped soil in the direction of the rotor shaft when inpenetrates into the ground (so-called first-cutting effect), so that nosmudging traces can be left in the ground.

A special characteristic of the plow-type blades 71 is the fact that thebackswept front edge of each plow-type blade 71 pointing in rotatingdirection is arranged at a relatively large distance in front of thestriking or wedging edge 70 of the prong end piece 63, whereas the edgeof the plow-type blade 71, which points against the rotating directionand which is backswept slightly in backward direction, is located inapproximately the same plane as the side of the prong end piece 63pointing against the rotating direction, compare FIG. 15. This shape andthis arrangement of the plow-type blade 71 are advantageous in that theplow-type blade 71, as a result of wear during soil work, is reduced insize relatively uniformly corresponding to the interrupted lines 71' and71", without the formation of thorn-type areas with a narrowcross-section which project sideways or backwards from the prong endpiece 63. Thorn-type parts of this type, as a result of further wear,may break off and remain on the respective worked field. During the soilpreparation which follows, there will then be the danger that thesemetal parts may be thrown up by the respective soil cultivating machineand, under certain circumstances, may be a danger to people.

Therefore, this danger does not exist in the arrangement and shape ofthe plow-type blade 71 according to the invention. In contrast, thisblade 71 will be reduced only to the cross-section of the prong endpiece 63 as a result of increasing wear.

Also when the prong end pieces shown in FIGS. 14 and 15 are used, therotary device with dovetailing prongs 14 preferably has only relativelyfew prongs, particularly again only one prong for each stroke plane, andis driven at a relatively high speed. This results in a total detachingof any ground growth. At the same time, the ground is gripped and workedwithout causing smudging traces, specifically with a very good mixing.On the other hand, as a result of the very high striking speed, aparticularly good cutting or crushing effect is achieved. This has theresult that the gripped soil, while producing a relatively "transparent"stream of soil which consists of very small particles, is thrownbackward at a high speed.

In the case of very wide machines, it may be advantageous to arrange therotary device with dovetailing prongs 14 with several sections, whichcan be axially connected with one another and to, in each case, provideone intermediate bearing between the sections. In this case, on the onehand, a high bearing capacity of the bearing is desirable while, on theother hand, this bearing should have small axial dimensions, becauseotherwise there is the danger of damage to the bearing, or relativelylarge axial distances between the rotor prongs on both sides of theintermediate bearing would have to be accepted. FIGS. 16 to 18 show aparticularly narrowly constructed intermediate bearing of a high bearingcapacity.

Ring-disk-shaped flanges 25 are welded to the ends of the rotor shaftsections, in which case, preferably two welding seams are provided, onebeing inside the ring opening of the flanges 25 receiving the rotorshaft and the other being at the front edge of the mentioned ringopening on the side of the shaft.

Two mutually connected circular disks 26 are coaxially arranged betweenthe flanges. The circular disks 26, on one side, are connected by meansof a central screw 47 and, on the other side, by means of bolts 28 whichare received in bores of the circular disks 26 arranged in a ring-shapewith respect to the screw 47. If necessary, the bolts 48 may be fastenedin the pertaining bores of the circular disks by a slight heating of thecircular disks 26 before the bolts 48 are inserted, in order to slightlywiden the bores receiving the bolts 48. Then the bolts 48, which fitinto the widened bores, are inserted and are held with high force duringthe subsequent cooling of the circular disks 26.

At the outer circumference, the circular disks 26 commonly delimit acircumferential groove having a cross-section which widens in a stepshape radially toward the outside. Inside the deep central area of thisgroove, a radial bearing 27 completely with its outer and inner bearingshell is housed, which in the example according to FIG. 18 is a ballbearing. If necessary, a roller bearing may also be used advantageouslyinstead of the ball bearing. The arrangement of the radial bearing 27naturally takes place before the connecting of the circular disks 26with one another. At a vertical longitudinal web 49, which is arrangedin the housing of the rotary device with dovetailing prongs 14 or formspart of the frame of the rotary device with dovetailing prongs 14, aseparable holding part 28 is arranged which encloses the outer bearingshell of the radial bearing 27 in a ring shape and one half of which iswelded to the longitudinal web 49, and the other half of which, in themanner shown in FIG. 16, can be connected by means of screws at thelongitudinal web 49 or at the half of the holding part 28 which iswelded to the longitudinal web 49. The holding part 28 has across-section which is adapted to the circumferential groove of thecircular disks 26 on both sides of the radial bearing 27 in such amanner that a labyrinth-type stepped ring gap remains open between theholding part 28 and the edges of the circular disks 26.

The radial bearing 27 may be provided with a permanent lubrication inthe form of a lubricating-grease packing. If necessary, the lubricantfilling may also be renewed during an occasional demounting of sectionsof the rotary device with dovetailing prongs. The connecting screws 50,which are shown only schematically and by means of which the flanges 25of the rotor sections are fastened to the circular disks 26, may bescrewed to the circular disks 26 in threaded bores which extend into thearea of the circumferential groove between the circular disks 26 whichreceives the radial bearing 27. Thus, these threaded bores may also beused for the refilling of lubricant if the respective screw 50 isunscrewed.

In order to loosen up compacted soil in the area of the tracks left bythe traction vehicle or the tractor, loosening accessories 19,vertically adjustably by means of their holding stems 20, may bearranged at a transverse bar of the rotary device with dovetailingprongs 102. With a view to the construction of this device which is asshort as possible and in view of the arrangement of this device closelybehind the traction vehicle or tractor, the holding stems 20 are bentbackward in the direction of the rotary device with dovetailing prongs14, so that the loosening accessories 19 operate practically directly infront of the operating range of the rotary device with dovetailingprongs 14, and the soil thrown up by the loosening accessories 19,without any prior depositing on the ground surface, is drawn into therunning rotary device with dovetailing prongs 14.

The loosening accessories 19 are preferably provided in an exchangeablearrangement. For this purpose, according to FIGS. 10 and 11, atriangular extension 21 is arranged at the lower end of the respectiveholding stem 20 and points in driving direction. The loosening accessory19 may be placed on this extension 21 in the manner of a shoe. In thiscase, the loosening accessory 19 has a lower chisel-type part 22 whichis connected with a ledge-type part 23 to form an angular part enclosingthe lower and the front edge of the extension 21. The front end of thechisel-type part projects slightly beyond the ledge-type part 23, which,in turn, at its edge pointing toward the front in driving direction,forms a wedge 23'. At both sides of the extension 21, triangle-typeplates 29 are arranged at the loosening accessory 19, the front andlower edges of these plates being welded together with the ledge-typepart 23 or the chisel-type part 22. An eccentric 85 is used for thecaptive holding of the loosening accessory 19 at the assigned holdingstem 20, this eccentric 85 penetrating mutually overlapping bores in thetriangle-type plates 29 as well as in the holding stem 20. By means of acorresponding rotation of the eccentric 85, the triangle-type plates 29and thus the loosening accessory 19 are pulled in the direction of therear side of the holding stem 20. Correspondingly, also in the case ofpossible manufacturing tolerances, a very firm and secure fit of theloosening accessory 19 at the holding stem 20 may be ensured. For thesecuring of the eccentric 85, a nut 86 is used which can be screwed ontoa threaded part of this eccentric 85 and which makes it possible thatthe triangular plates 29 are braced between the nut 86 and the head 87of the eccentric 85 against the holding stem 20.

For the fastening of the holding stems 20 of the loosening accessories19, the arrangement shown in FIGS. 8 and 9 may preferably be used.

The transverse bar used for the fastening is embraced by two anglesections 130 which are screwed together in the manner of a clamp, inwhich case the screws penetrate tab-shaped extensions of the anglesections 130 arranged on both sides of the stem 20 to be fastened. Onboth sides of the stem, lower and upper guiding ledges 131 and 132 arein each case welded to the angle sections 130, the distance of theseguiding ledges 131 and 132, in transverse direction of the machine,corresponding to the corresponding transverse dimensions of the holdingstem 20.

On the side of the holding stem 20 facing away from the bar or the anglesections 130, a rod-shaped part 133 is detachably fastened, for example,by means of screw bolts 134, between the guiding ledges 131 and 132. Bymeans of the guiding ledges 131 and 132 as well as the rod-shaped part133 and the bars embraced by the angle sections 130, the holding stem 20is enclosed in a tube shape so that it can be shifted only vertically.The respective vertical position may be secured by means of bolts or thelike which are pushed into aligned openings in the upper guiding ledges132 and in the holding stem 20. For a better support of the holding stemduring soil preparation work, a lug-shaped extension 135 may also bewelded to the lower angle section 130 in order to support the holdingstem 20, on its side facing backwards in the direction of the apparatus,along a large vertical length.

The exchange of the holding stem 20 or of a loosening accessory 19arranged on it is significantly facilitated by the fact that therod-shaped part 133 can, in each case, be removed by means of theuntightening of the screw bolt 134 so that the holding stem 20 betweenthe guiding ledges 131 and 132 in FIG. 8 can be removed toward the left.The rotary device with dovetailing prongs 102 does not have to be movedvertically for this purpose.

If necessary, it is sufficient to unscrew only the lower screw bolts 134for the demounting of the holding stems 20. Then, the holding stem 20,for the demounting, can be swivelled around a transverse axis of thedevice, in which case the area of the holding stem 20 which is the lowerarea in FIG. 8, moves toward the left. The holding stem 20 can then bepulled out toward the left in slantedly downward direction, without thenecessity of having to lift the rotary device with dovetailing prongs102.

The sowing machine shown in FIG. 3, among other characteristics, has thespecial characteristic that the pertaining bearing frame possessessufficient stability in order to connect the sowing machine, asexplained above, between the rotary device with dovetailing prongs 102and the land roller or clod breaker apparatus 104. In this connection,the stability of the bearing frame of the sowing machine 102 is verysignificant because an equipment combination, which comprises a rotarydevice with dovetailing prongs 102 as well as a land roller or clodbreaker apparatus 104, during ground preparation work, as a rule, issupported on the ground only by way of the roller. Correspondingly, thebearing frame of the sowing machine 103 which connects the rotary devicewith dovetailing prongs 102 with the land roller or clod breakerapparatus 104, must be able to withstand considerable stress.

For the case in which no sowing machine is available that has asufficiently stable bearing frame, an arrangement corresponding to FIG.6 is therefore provided for a combination consisting of the rotarydevice with dovetailing prongs 102 and the land roller or clod breakerapparatus 104 as well as the sowing machine 103. In this arrangement, asdescribed above, the land roller or clod breaker apparatus 104, by meansof an intermediate frame 7, is connected with the frame of the rotarydevice with dovetailing prongs 102.

If the bearing frame of the sowing machine 103 is sufficiently sturdy,an arrangement of the land roller or clod breaker apparatus 104 may beprovided, in addition, at the sowing machine frame which can beswivelled upward, specifically in a manner which, in principle, is thesame as explained above for an arrangement at the clod breaker apparatus104 at the intermediate frame 7, in the case of an arrangement accordingto FIGS. 6 and 7 with the intermediate frame 7 between the rotary devicewith the dovetailing prongs 102 and the land roller or clod breakerapparatus 104.

Irrespective of whether the land roller or clod breaker apparatus 104 isarranged at the bearing frame of the sowing machine 103 so that it canbe swivelled upward or cannot be swivelled upward, a curtain 16 isarranged at the bearing frame of the sowing machine 103 preferably infront of the roller which follows, as described above for an equipmentcombination according to FIGS. 6 and 7.

Another special characteristic of the sowing machine is the fact thatthe seed delivery pipes 10, in order to enlarge the passagecross-section existing between them for the soil, in lateral view of themachine, are arranged staggered behind one another in at least two rows,in which case seed delivery pipes, which follow one another intransverse direction of the machine, are housed alternately in one orthe other row. In this case, the invention utilizes the recognition thata sufficiently large passage cross-section between the seed deliverypipes can also be produced when their line distance in transversedirection of the machine is narrow, because of the fact that intransverse direction narrowly spaced seed delivery pipes are arrangedwith a larger distance in longitudinal direction of the machine.

Preferably, the seed delivery pipes 10 are fixed at the bearing frame ofthe sowing machine 103, but, in principle, it is also possible to fixthe seed delivery pipes 10 to other parts of the equipment system, forexample, to the intermediate frame 7 between the rotary device withdovetailing prongs 102 and the land roller or clod breaker apparatus104.

The construction of the seed delivery pipes 10 as well as their fixingis shown in detail in FIGS. 20 to 22.

Stirrups 233 which embrace the transverse bar 231 on three sides arearranged at the transverse bar 231. On the side of the transverse bar231, which faces away from the central area of the stirrups 233,clamping pieces 234 are arranged at the U-legs of the stirrups 233 whichare located opposite one another, which rest on one another with slantedsurfaces 234' and are arranged such that they rest against thetransverse bar 231. By means of screw bolts 235, the U-legs of thestirrups 233 as well as the clamping pieces 234 can be braced withrespect to one another, one respective clamping piece 234 (in FIGS. 21and 22, always the upper clamping piece 234) shifting with respect tothe other clamping piece 234 against the transverse bar 231. This isbased on the fact that the slanted surfaces 234', in longitudinaldirection of the machine, are sloped with respect to a horizontal planeand correspondingly the mutually braced clamping pieces 234, when theslanted surfaces 234' slide on one another, are shifted in longitudinaldirection of the machine in forward or backward direction. By means ofthe contact pressure of the respective one (upper) clamping piece 234 onthe transverse bar 231, a particularly secure fit is ensured of thestirrups 233 on the transverse bar 231.

On the sides of the stirrups 233 which face away from the clampingpieces 234, the seed delivery pipes 10 are pivotably held by means ofhinge-type joints 236, which have axes that extend in transversedirection of the machine. At the joint parts assigned to the seeddelivery pipes 10, tab-shaped extensions 236' are arranged which projectdownward and which serve as a movable abutment of a helical tensionspring 237, the other end of which is fastened to a downward-bentextension of one U-leg of the stirrups 233. In this case the tension ofthe helical tension springs 237 may be adjusted by means of adjustingscrews 237.

In order to permit the arrangement of the seed delivery pipes 10 shownin FIG. 2, but also in FIGS. 6, 23, and 24, in two rows behind oneanother at the same transverse bar 231, one holding arm 239respectively, in the case of the seed delivery pipes 232 which are inthe rear in driving direction, is arranged at the joint part on the seedpipe side. If necessary, the holding arm 239 may be constructed to betelescopically adjustable in order to be able to vary the step distancebetween the seed delivery pipes 232 which are in front in drivingdirection and the seed delivery pipes 232 which are in the rear indriving direction. By means of the above-mentioned adjustability of thetension of the helical tension springs 237, it is ensured thatcomparable forces must affect the lower ends of the seed delivery pipeswhich are in front in driving direction as well as of those which are inthe rear in driving direction, in order to deflect the seed deliverypipes 232 clockwise against the force of the springs 237 in FIGS. 21 and22.

The transverse bar 231 carrying the seed delivery pipes 10 ispreferably, in the manner shown in FIG. 20, fixed at a transverse bar ofthe bearing frame of the sowing machine 103 or of another part of theequipment system. Spindle units 152 or the like are arranged, pivotablyaround a transverse axis 153 of the machine, at the transverse bar 150or at arms 171 which are arranged on it and which, in longitudinaldirection, are normally directed toward the rear. The respective pivotalposition of the spindle units may be determined by inserting bolts orthe like in mutually corresponding openings of perforated disks 154which, on one side, are fixedly arranged at the corresponding spindleunit 152 or the like and, on the other side, are fixedly arranged at therespective arm 151 or at the transverse bar 150.

By means of actuating the crank 155, the lower end of each spindle unit152 may be moved out telescopically more or less far. At the lower endsof the spindle units 152, the transverse bar 231 is pivotable around atransverse axis 156, for example, by means of a hinge-type jointarrangement formed by flat parts. A corresponding adjusting device isprovided for making it possible to adjust the respective swivellingposition.

For this purpose, a helical compression spring 158 is clamped on in theexample of FIG. 20 between a flat-strip-type arm 157 arranged at thetransverse bar 231 and the lower vertically adjustable part of thespindle unit 152. This helical compression spring 158 braces theflat-strip-type arm 157 with respect to a nut 159 provided with ahandle, this nut 159 being screwably-adjustably arranged on a threadedpart which is hinged to the lower part of the respective spindle unit152 and penetrates an opening in the flange-strip-type arm 157.

By means of the swivelling of the spindle units 152, the transverse bar231 and therefore the seed delivery pipes 10, in longitudinal directionof the machine, may be pushed toward the rear or the front. By means ofthe cranks 155 of the spindle units 152, the height of the seed deliverypipes 232 may be changed rapidly. The adjustment of the nuts 159provides the possibility of adjusting the height of the seed deliverypipes 232, which are in the rear in driving direction (in FIG. 20, theleft seed delivery pipes) relative to the front seed delivery pipes 232.In this manner, it can be ensured under all circumstances that the seedcoming out of the front and the rear seed delivery pipes 232 is coveredevenly with soil, particularly when the rotary device with dovetailingprongs 102 operates in front of the seed delivery pipes 232. Anadaptation to the shape of the stream of soil thrown backward by therotary device with dovetailing prongs which passes through between theseed delivery pipes 232 is therefore possible in any manner.

If, when the traction vehicle or tractor drives backwards, the seeddelivery pipes 10 come in contact with the ground, a larger flexibilityis ensured by means of the helical compression springs 158; i.e., as arule, defects may be avoided.

In principle, other elements may also be arranged for the adjustment ofthe transverse bar 231 in longitudinal direction of the machine and invertical direction. However, the arrangement according to FIG. 20distinguishes itself by its particularly simple operatability.

The seed delivery pipes 10 are constructed in two parts, in which case,a respective upper pipe piece 10' is pivotably held at the stirrups 233.The respective lower pipe piece 10" is telescopically slidably arrangedon the upper piece piece 10' and may be fixed to the upper pipe piece10' by means of locking screws 240. Thus, on the one hand, it ispossible to adjust the height of the lower ends of the seed deliverypipes 10 and, on the other hand, if necessary, lower pipe pieces 10" ofa different shape may be arranged or sowing plows fitting on the upperpipe pieces 10'.

In the shown embodiments, the seed delivery pipes 10 are each arrangedsingly. In principle, double pipe arrangements are also possible, onepipe being used for the delivery of the seed, and the other pipe beingused for the delivery of fertilizers or the like. In order to avoid thatstrands of plants or the like adhere to the delivery pipes constructedin the shape of a double pipe, one pipe part of the double pipe, indriving direction, is arranged behind the other pipe part.

We claim:
 1. An equipment system for agricultural ground soilpreparation, comprising:a vertically adjustable frame unit, having atrestle-type frame part including a bearing frame for coupling the frameunit to a traction vehicle by a lifting rod assembly or a three-pointrod assembly and including a supporting frame, the trestle-type framepart being fixedly arranged at an undercarriage with support wheels; arotary device with dovetailing prongs, driven by a power take-off shaft,for producing a soil stream, having a bearing frame with receiving partsfor coupling the rotary device to the frame unit, wherein the bearingframe of the rotary device is locked without play in all directions withrespect to the frame unit; a sowing machine with vertically adjustableseed delivery pipes adapted to be mounted behind one another in two rowswhich follow one another in transverse direction, for delivering seedsinto the soil stream produced by the rotary device, having a bearingframe adapted for mounting behind the rotary device, and also beingadapted for mounting to the bearing frame of the frame unit; a clodbreaker, having a bearing frame which is adapted to be mounted on eitherthe bearing frame of the frame unit, the bearing frame of the rotarydevice via separate connecting points on the bearing frame of rotarydevice, or on the bearing frame of the sowing machine, and which can bepivotably adjusted around a transverse axis; vertically adjustable plowaccessories, adapted to be mounted on the undercarriage of the frameunit or in front of the rotary device; and a mat-type curtain forguiding the soil stream to the ground behind the seed delivery pipes. 2.An equipment system according to claim 1, wherein the clod breaker canbe mounted at an intermediate platform-like frame which extends inbackward direction from the frame of the rotary device.
 3. An equipmentsystem according to claim 1, wherein the clod breaker is adapted to becoupled to the frame of the undercarriage.
 4. An equipment systemaccording to claim 1, wherein the wheels of the undercarriage areattached via an axle unit which employs a longitudinal rocker device topivotably mount the axle unit around a transverse axis, at the frame ofthe undercarriage, the axle unit being vertically adjustably supportedby support means including a spindle unit, which is adapted to beinserted between the axle unit and the frame of the undercarriage awayfrom the transverse axis.
 5. An equipment system according to claim 4,wherein the frame of the clod breaker is a longitudinal rocker deviceadapted to be mounted at connecting parts provided for the axle unit,pivotably around the same transverse axis, at the frame of theundercarriage, and is adapted to be supported by the spindle unit.
 6. Anequipment system according to claim 1, wherein a pulley is provided atthe undercarriage which can be driven by the power take-off shaft fordriving the sowing machine, mounted on the undercarriage.
 7. Anequipment system according to claim 1, wherein a flap is arranged behindthe rotary device, the flap being connected to an upper rotor casing andpivotably adjusted around a transverse axis, the flap delimiting, inupward direction, the clearance for the soil thrown backward by therotor.
 8. An equipment system according to claim 7, wherein at the freeend of the flap, a flexible mat is arranged, which is a continuation ofthe flap and which has approximately the same dimensions as the flap. 9.An equipment system according to claim 1, wherein the plow havingholding stems, is vertically adjustably arranged in holding deviceswhich surround the stems in a ring shape and which can be laterallyopened in such a manner that the stems can be taken out of the holdingdevices transversely to their axis.
 10. An equipment system according toclaim 1, wherein the seed delivery pipes are constructed as a telescope,a lower end piece being fixable on or in an upper segment of therespective seed delivery pipe in differently shifted positions.
 11. Anequipment system according to claim 1, wherein the seed delivery pipeswhich are adapted to be swivelled in longitudinal direction of themachine are mounted at a transverse bar by means of clip-type holdingdevices which can be adjusted in a transverse direction and which, bymeans of stirrups, embrace the transverse bar in a U-shape wherein onthe side of the transverse bar, facing away from the center piece of thestirrups, the clamping pieces have slanted surfaces resting on oneanother such that one clamping piece, when the U-legs are braced againstone another, is pressed against the bar.
 12. An equipment systemaccording to claim 1, wherein the seed delivery pipes are held behindone another jointly at a frame or at a transverse bar, which is adaptedto be adjusted vertically or longitudinally of the machine whileswivelling around its axis.
 13. An equipment system according to claim1, wherein a transmission of the rotary device with dovetailing prongs,which can be connected with the power take-off shaft, has an additionalpower take-off for a pulley for driving a sowing machine which can bemounted on the rotary device with dovetailing prongs.